APARELHO PARA FORNECIMENTO DE SINAIS DE SAIDA RESPONSIVOS A UMA CORRENTE QUE PASSA EM UM SISTEMA DE ENERGIA ELETRICA TRIFASICA

APARELHO PARA FORNECIMENTO DE SINAIS DE SAIDA RESPONSIVOS A UMA CORRENTE QUE PASSA EM UM SISTEMA DE ENERGIA ELETRICA TRIFASICA

Protective relay apparatus which includes monitoring and detecting functions related to subsynchronous currents in a three-phase electrical power system. The monitoring function provides signals related to the positive sequence component of any subsynchronous current flowing at a monitored subsynchr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHAN C SUN, CHURCH L
Format: Patent
Sprache:por
Schlagworte:
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
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Beschreibung
Zusammenfassung:Protective relay apparatus which includes monitoring and detecting functions related to subsynchronous currents in a three-phase electrical power system. The monitoring function provides signals related to the positive sequence component of any subsynchronous current flowing at a monitored subsynchronous frequency. The detecting function is responsive to the signals provided by the monitoring function, distinguishing between subsynchronous currents due to self-excited oscillations, and those due to transient oscillations, to provide a timely trip signal for a circuit breaker in either instance.